Even if you didn't eat your veggies or drink your milk as a child, your height is still in your hands, reveal new findings by economists from the University of Southern California, Harvard University and Peking University. Using unique data from a new massive longitudinal survey of 17,708 adults beginning at age 45, the researchers show for the first time that lifestyle choices we make in adulthood -- and not just the hand we're dealt as children -- influence how tall we stand as we age.